Bringing PRC Alpha up to pairty with PRC35

Bringing PRC alpha up to parity with PRC35 with the exception of the marker feats, which need to be reworked.  Updated PRC alpha release.

nwn/nwnprc/trunk/epicspellscripts/ss_ep_spellworm.nss

@@ -58,8 +58,15 @@ void main()
 
 void RunWorm(object oTarget, int nRoundsRemaining)
 {
-    int nSpell = GetBestAvailableSpell(oTarget);
-    if (nSpell != 99999)
+
+	int nSpell = GetBestAvailableSpell(oTarget);
+	if(oTarget == OBJECT_INVALID)
+	{
+		SetLocalInt(oTarget, "sSpellWormActive", FALSE);
+		return;
+	}
+	
+	if (nSpell != 99999)
     {
         DecrementRemainingSpellUses(oTarget, nSpell);
         nRoundsRemaining -= 1;